#region License
/* 
 *
 * Copyright (c) 2004-2020 Michael Warriner
 * Modifications (c) as per Git change history
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
 * and associated documentation files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all copies or substantial 
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
 * LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
 
#endregion
using System;

namespace Open3270.TN3270
{
	/// <summary>
	/// Summary description for ExtendedAttribute.
	/// </summary>
	internal class ExtendedAttribute
	{
public const byte  GR_BLINK	=0x01;
public const byte  GR_REVERSE	=0x02;
public const byte  GR_UNDERLINE	=0x04;
public const byte  GR_INTENSIFY	=0x08;

public const byte  CS_MASK		=0x03;	/* mask for specific character sets */
public const byte CS_GE		=0x04;	/* cs flag for Graphic Escape */

		internal ExtendedAttribute()
		{
			cs = 0;
			fg = 0;
			gr = 0;
			bg = 0;
		}
        internal void Clear()
        {
            cs = 0;
            fg = 0;
            gr = 0;
            bg = 0;
        }

		public byte cs;
		public byte fg;
		public byte bg;
		public byte gr;

		public bool IsZero
		{
			get { return (cs+fg+bg+gr)==0;}
		}
	}
}
